Exchange outflow spike detected across major CEXs: Kraken, Coinbase, and Binance combined saw 47,300 BTC leave wallets in the last 72 hours, the highest weekly rate since March. This 2.1% of circulating supply moving to self-custody typically signals either institutional accumulation at support or pre-volatility hedging—the timing against current -3.3% BTC drawdown suggests the former, but watch if outflows accelerate above 65k BTC weekly threshold.